Lately a lot of my dreams have been ending with someone chasing me.

In my last dream, I'm walking home alone from a concert and It's really late at night. There are hardly any lights as I'm walking down the street and I can barely see anything. I see a flash up ahead as if someone took a picture of me from a distance. I turned on the next street and it was dark enough to the point where I actually had to look down by my feet just so I could stay on the sidewalk and not accidently wander into the street. Finally some of the darkness clears up a little bit and I'm at a corner one block from my house. I notice someone walking on the otherside of the street who appeared to be homeless and they looked at me for a second and walked away. Then I saw a car coming and I hid behind something(another car). They stared at me as they drove by and someone in the car jumped out and began running after me with a knife. Since it was dark I thought I could run around a couple houses and hide somewhere but he outran me and I began to fear for my life as he got closer. Just before he was about to stab me I woke up.

This is probably the only dream I had that ended negatively, but aside from that almost all my dreams have ended with somebody chasing after me, and then I wake up. What could this mean? I have it so often I get the feeling my subconscious is trying to tell me something.